Sonication-Assisted Extraction of Parabens in Environmental Samples
Scientists from INIA (Madrid, Spain) used ultrasonic-assisted extraction followed by liquid chromatography with triple-quadrupole mass spectrometry detection (LC?MS) to analyze paraben compounds in environmental solid samples.
Scientists from INIA (Madrid, Spain) used ultrasonic-assisted extraction followed by liquid chromatography with triple-quadrupole mass spectrometry detection (LC–MS) to analyze paraben compounds in environmental solid samples. The sonication was performed in small glass columns. The samples were subjected to two consecutive 15-min sonication steps with acetonitrile as the extraction solvent. The sample extracts were evaporated under nitrogen and were subsequently analyzed by LC–MS. The technique was found to be suitable for analyzing methyl, ethyl, isopropyl, propyl, benzyl, and butylparaben in solid samples such as soil and sediments at trace levels.
HPLC 2025 Preview: Functionalized Monoliths as Selective Sample Preparation Materials
May 16th 2025Analyzing trace compounds from complex samples often requires purification and pre-concentration, and online coupling of solid-phase extraction (SPE) with liquid chromatography (LC) helps minimize analysis time and solvent/sample use. Monoliths with large macropores are ideal for this coupling due to their low back pressure and versatility in various formats.
Thermodynamic Insights into Organic Solvent Extraction for Chemical Analysis of Medical Devices
April 16th 2025A new study, published by a researcher from Chemical Characterization Solutions in Minnesota, explored a new approach for sample preparation for the chemical characterization of medical devices.
